Formation and arrangement of the harness cords for jacquard machines



Feb. 20, 1934. J. T HARDAKER 1,947,646

FORMATION AND ARRANGEMENT OF THE HARNESS CORDS FOR JACQUARD MACHINES Filed Nov. 4, 1931 f 6 gamm L L I 7Jz0e%/ J Tfi ariaier ,4, MAJ/W Patented Feb. 20, 1934 UNITED STATES FORMATION AND ARRANGEMENT OF THE HARNESS CORDS FOR JACQUARD MA- CHINES John Thomas Hardaker, Bradford, England Application November 4, 1931. Serial No. 572,934

1 Claim.

This invention relates to the formation and arrangement of the harness cords for jacquard machines whereby the efficiency of said cords is greatly enhanced, while yet securing the accuracy of production essential for enabling said harness cords to perform the functions required of them and to withstand the wear and deterioration under the conditions hereinafter explained.

As is well known the lower portions of the harness cords of a jacquard machine are secured to the mails and extend upwardly therefrom to be afterwards secured to the ends of the upper cords or harness that extend to the needles in the jacquard. It is essential for the purpose of securing the accuracy necessary for enabling said cords to work in unison with each other, that the said lower portions connected with the mails be produced separately from the upper portions which extend from the lower portions to the jacquard, in order that after said lower portions have been separately produced, the upper cords extending to the jacquard may be secured to them under conditions that enable all the mails to be suspended in one and the same horizontal plane.

In carrying out my invention I arrange the portions of the lower cords which pass through the mails so that they have upwardly extending strands tied to each other by knots above the usual cumberboard, one of said strands extending above the other and being tied by an upper knot to the lower end of the cord that is connected with the jacquard.

Heretofore in carrying out the production of the devices described so far as I know, only two methods have been followed. According to one of said methods the ends of the cords which reach from the mail have been tied together and to the end of the cord extending to the jacquard so that the three cords form one and the same knot or attachment to each other and therefore by the said three cords being joined together a bulky and cumbersome knot has been formed which when in use often causes damages by one knot rubbing against or engaging other of its neighbouring knots. According to the other arrangement of these cords the part of the cord which takes through the mail in the usual manner has had its two loose ends tied together in one knot, and then at a short distance therefrom the two strands of the endless cord thus formed are tied to the third cord which reaches to the jacquard so that in this case also the knots are formed by the tying together of three cords in one and the same place.

In carrying my invention into effect I avoid the formation of the attachment or tying together of any of my cords in more than two cords to form one and the same knot, while I further secure advantages hereinafter described by reference to the accompanying sheet of drawing in which:-

Fig. 1 is an elevation showing three mails with their cord attachments which support them from below the cumberboard and with said mails in their lowest positions.

Fig. 2 is a similar view to Fig. 1, but shows the cords raised in order to illustrate the actions of same as is hereinafter described.

Fig. 3 shows portions of the parts shown by Fig. 1 and in the same position and on an enlarged scale.

In the accompanying drawing A indicates a portion of a cumberboard and B the cords or harness which extend from above said cumberboard to the jacquard in known manner.

According to my invention I arrange each of the sets, or groups, of cords which pass through and are secured to the mails 2, so that each set includes two strands 3 and 3a, one longer than the other. Said strands pass through an orifice in the cumberboard A and are tied together to form a knot 3d located above said cumberboard, not only when the mails are in their highest position shown by Figure 2, but also when they are in their lowest position shown by Figure 1. The longer strand extends upward from the knot 3d so that it may be tied by a knot 3f to the cord B which extends to the jacquard.

It will be seen therefore that only two strands are tied together to form the knot 3d, so that said knot occupies lessspace and is more free from interference with or by other knots 3d than in either of the arrangements which have been previously employed. 7

Further, in consequence of said formation and arrangement of the strands 3, and 311, only one strand extends upwardly from the knot 3d in order that it may be tied to form the knot 31, I therefore secure the advantage of being able to have the two strands 3 and 30!. extend through an orifice in the cumberboard A to resist the wearing and deterioration well known. I also secure the usual facility in connecting the mails with the jacquard.

Such being the nature and object of my said invention what I claim is:

In a jacquard machine which includes a cumberboard having cord orifices and mails below the cumberboard; sets of harness cords connecting the mails with the jacquard, each set including a looped cord folded and connected between its ends with a mail and having strands of unequal length, said strands being tied together by a knot located above the cumberboard when the mail is in any operative position, the longer strand extending upward from said knot and adapted be tied to a single cord extending to the jacquard.

JOHN THOMAS HARDAKER. 

